Two Hibiscus Plant Problems

Question

I didn’t know I had to prune in January, so I pruned in May. The plant is growing but has no flowers. My second plant that I just bought and transplanted now has yellow leaves and I don’t know why.

Answer 1

The first plant may need some fertilizer. If you have not done that yet, give it some fertilizer. This article has some other suggestions about what might be causing the lack of flowers:
https://www.gardeningknowhow.com/plant-problems/environmental/plant-not-blooming.htm

The first plants sounds like it might be in transplant shock. This article will help with that:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm